title: Metabolic syndrome by the new IDF criteria in Hong Kong Chinese adolescents and its prediction by using body mass index.
abstract: OBJECTIVE
  The International Diabetes Federation (IDF) has recently proposed a new set of criteria to define metabolic syndrome (MES) in children and adolescents. We estimated the rate of MES by these new IDF criteria and investigated the use of body mass index (BMI) in predicting MES in Chinese adolescents.
  
  
  METHODS
  This is a cross-sectional, population-based study of 1616 Chinese adolescents. sensitivity, specificity and likelihood ratio were calculated to assess the accuracy in using BMI to predict the presence of MES.
  
  
  RESULTS
  In the study population, 48.6% were boys. The median age was 14.0 and 15.0 years for boys and girls respectively and the overall prevalence of MES was 1.2% (boys 1.5%; girls 0.8%). Using BMI > or =25 kg/m(2), the sensitivity, specificity and likelihood ratio to predict MES were 100%, 85.0% and 6.7% respectively. The corresponding figures were 52.6%, 97.1% and 18.1%, respectively, using BMI > or =30 kg/m(2).
  
  
  CONCLUSIONS
  Metabolic syndrome was found in 1.2% of Chinese adolescents in Hong Kong. BMI is a useful clinical tool to predict clustering of cardiometabolic risk factors in adolescents.
authors.affiliation: Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China.
authors.forename: Alice P S
authors.initials: AP
authors.lastname: Kong
authors.forename: Gary T C
authors.initials: GT
authors.lastname: Ko
authors.forename: Risa
authors.initials: R
authors.lastname: Ozaki
authors.forename: Gary W K
authors.initials: GW
authors.lastname: Wong
authors.forename: Peter C Y
authors.initials: PC
authors.lastname: Tong
authors.forename: Juliana C N
authors.initials: JC
authors.lastname: Chan
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D008297:Male; D024821:Metabolic Syndrome / Q000175:diagnosis / Q000453:epidemiology*; D017410:Practice Guidelines as Topic; D011237:Predictive Value of Tests; D015995:Prevalence